I have two motors at home a d15b7 and d16z6. the z6 transmission case had a hole in it so i decided to swap the gears from the z6 to the b7 transmission. Test drove the car and it drive fines on accelerating however when i decelerate the gears will grind. Anyone that works on transmissions know the cause of this? I need help asap...this is my daily.

 

Gears won't "grind" on decel...

How did the bearings look?

 

the bearing looked cool. the way that i can explain the noise is that lets say your motor is on in nuetral. Then you try to push the shift **** into gear if you push hard enough it will grind. Well this is the noise it makes when the car yanks, which it always yanks a little on deceleration. so Im think maybe the gears a mis-alllinged or maybe i messed up something with the shift linkage but then again every gear goes in smoothly.

 

failure to properly shim?

 

well i do not know what that is, so i probably did not do that. I have no problem pulling the tranny off and fixing it. What do i do? or what is that? how positive are you that is the problem?

 

pick up a HELMS, tear it down, CLEAN everything, and start over. Thats the best we can say for you.